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Commercial Audio Series Mixer-Amplifiers
page 13
Operation Manual
2 Setup
Output
Transformer
Power
AMP 1
Ch 1 Priority
[SW2]
CH 1
Tone Control
Master 1
AMP Out 1
Clip 1
Preamp Line Out 1
Mute
Scaling
Bass Trebl e
Gain 1
SP I
Input Gain
Mic/Line
[Bal]
RCA
280MA Block Diagram
Line
Mi c
Pre-Announce
Chim e
Ch 1 Normal
[SW1]
Ch 1 to Amp 1
[SW9]
Ch 1 to Amp 2
[SW10]
VC A
Pre-Announce Gain
Phantom Powe
r
VCA
HP Filter
SPI 1
100V
70V
4 Ohms
COM
CH 2
Tone Control
Bass Trebl e
Gain 2
SP I
RCA
Line
Mi c
Ch 2 to Amp 1
[SW11]
Ch 2 to Amp 2
[SW12]
Mic/Line
[Bal]
Input Gain
Ch 5 Priority
[SW6]
CH 5
Tone Control
Bass Trebl e
Gain 5
SP I
Input Gain
Mic/Line
[Bal]
RCA
Line
Mi c
Ch 5 Normal
[SW5]
Ch 5 to Amp 1
[SW17]
Ch 5 to Amp 2
[SW18]
CH 6
Tone Control
Bass Trebl e
Gain 6
SP I
RCA
Line
Mi c
Ch 6 to Amp 1
[SW19]
Ch 6 to Amp 2
[SW20]
Mic/Line
[Bal]
Input Gain
Ch 3 and Ch 4 similar to Ch 2
Ch 7 and Ch 8 similar to Ch 6
Ou t
In
Amp Input 1
Limiter
VCA 1
Ch 1 Amp 1
Mute
Ch 5 Amp 2
Mute
Output
Transformer
Power
AMP 2
Master 2
AMP Out 2
Clip 2
Pream p
Line Out 2
Scaling
VCA
VC A
HP Filter
SPI 2
100V
70V
4 Ohms
COM
Ou t
In
Amp Input 2
Limiter
VCA 2
Pre-Announce
Ch 1 Over Ch 5
[SW 4]
Ch 1 Over Ch 5
[SW 3]
Typical Signal Path, Amp 1
Typical Signal Path, Amp 2
Link
Priority
Link
Priority
Version 1.0
2.14 Block Diagram